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Mattos LMM, Hottum HM, Pires DC, Segat BB, Horn A, Fernandes C, Pereira MD. Exploring the antioxidant activity of Fe(III), Mn(III)Mn(II), and Cu(II) compounds in Saccharomyces cerevisiae and Galleria mellonella models of study. FEMS Yeast Res 2024; 24:foad052. [PMID: 38124682 PMCID: PMC10776354 DOI: 10.1093/femsyr/foad052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 11/19/2023] [Accepted: 12/19/2023] [Indexed: 12/23/2023] Open
Abstract
Reactive oxygen species (ROS) are closely related to oxidative stress, aging, and the onset of human diseases. To mitigate ROS-induced damages, extensive research has focused on examining the antioxidative attributes of various synthetic/natural substances. Coordination compounds serving as synthetic antioxidants have emerged as a promising approach to attenuate ROS toxicity. Herein, we investigated the antioxidant potential of a series of Fe(III) (1), Mn(III)Mn(II) (2) and Cu(II) (3) coordination compounds synthesized with the ligand N-(2-hydroxybenzyl)-N-(2-pyridylmethyl)[(3-chloro)(2-hydroxy)]-propylamine in Saccharomyces cerevisiae exposed to oxidative stress. We also assessed the antioxidant potential of these complexes in the alternative model of study, Galleria mellonella. DPPH analysis indicated that these complexes presented moderate antioxidant activity. However, treating Saccharomyces cerevisiae with 1, 2 and 3 increased the tolerance against oxidative stress and extended yeast lifespan. The treatment of yeast cells with these complexes decreased lipid peroxidation and catalase activity in stressed cells, whilst no change in SOD activity was observed. Moreover, these complexes induced the Hsp104 expression. In G. mellonella, complex administration extended larval survival under H2O2 stress and did not affect the insect's life cycle. Our results suggest that the antioxidant potential exhibited by these complexes could be further explored to mitigate various oxidative stress-related disorders.
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Affiliation(s)
- Larissa M M Mattos
- Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, RJ, Brazil
- Rede de Micologia RJ - FAPERJ
| | - Hyan M Hottum
- Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, RJ, Brazil
- Rede de Micologia RJ - FAPERJ
| | - Daniele C Pires
- Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, RJ, Brazil
- Rede de Micologia RJ - FAPERJ
| | - Bruna B Segat
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Adolfo Horn
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Christiane Fernandes
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Marcos D Pereira
- Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, RJ, Brazil
- Rede de Micologia RJ - FAPERJ
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Maleki B, Sandaroos R, Naderi S, Peiman S. A crowned manganese-based Schiff complex supported on nanocellulose as an efficient and sustainable heterogeneous catalyst for the oxidation of benzyl alcohols. J Organomet Chem 2023. [DOI: 10.1016/j.jorganchem.2023.122666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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3
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Ibrahim MM, El-Kemary MA, Al-Harbi SA, Al-Saidi HM, Sallam SA, Ramadan AEMM. Synthesis and Structural Characterization of Pyridine-based Mn(III), Fe(III), and Co(III) Complexes as SOD Mimics and BSA Binding Studies. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129706] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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4
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Pasini AMF, Cominacini L. Effect of Antioxidant Therapy on Oxidative Stress In Vivo. Antioxidants (Basel) 2021; 10:antiox10030344. [PMID: 33669036 PMCID: PMC7996551 DOI: 10.3390/antiox10030344] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 02/23/2021] [Indexed: 12/30/2022] Open
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Brand MD. Riding the tiger - physiological and pathological effects of superoxide and hydrogen peroxide generated in the mitochondrial matrix. Crit Rev Biochem Mol Biol 2020; 55:592-661. [PMID: 33148057 DOI: 10.1080/10409238.2020.1828258] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Elevated mitochondrial matrix superoxide and/or hydrogen peroxide concentrations drive a wide range of physiological responses and pathologies. Concentrations of superoxide and hydrogen peroxide in the mitochondrial matrix are set mainly by rates of production, the activities of superoxide dismutase-2 (SOD2) and peroxiredoxin-3 (PRDX3), and by diffusion of hydrogen peroxide to the cytosol. These considerations can be used to generate criteria for assessing whether changes in matrix superoxide or hydrogen peroxide are both necessary and sufficient to drive redox signaling and pathology: is a phenotype affected by suppressing superoxide and hydrogen peroxide production; by manipulating the levels of SOD2, PRDX3 or mitochondria-targeted catalase; and by adding mitochondria-targeted SOD/catalase mimetics or mitochondria-targeted antioxidants? Is the pathology associated with variants in SOD2 and PRDX3 genes? Filtering the large literature on mitochondrial redox signaling using these criteria highlights considerable evidence that mitochondrial superoxide and hydrogen peroxide drive physiological responses involved in cellular stress management, including apoptosis, autophagy, propagation of endoplasmic reticulum stress, cellular senescence, HIF1α signaling, and immune responses. They also affect cell proliferation, migration, differentiation, and the cell cycle. Filtering the huge literature on pathologies highlights strong experimental evidence that 30-40 pathologies may be driven by mitochondrial matrix superoxide or hydrogen peroxide. These can be grouped into overlapping and interacting categories: metabolic, cardiovascular, inflammatory, and neurological diseases; cancer; ischemia/reperfusion injury; aging and its diseases; external insults, and genetic diseases. Understanding the involvement of mitochondrial matrix superoxide and hydrogen peroxide concentrations in these diseases can facilitate the rational development of appropriate therapies.
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Pursuing the Elixir of Life: In Vivo Antioxidative Effects of Manganosalen Complexes. Antioxidants (Basel) 2020; 9:antiox9080727. [PMID: 32785017 PMCID: PMC7465912 DOI: 10.3390/antiox9080727] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 07/31/2020] [Accepted: 08/07/2020] [Indexed: 12/15/2022] Open
Abstract
Manganosalen complexes are coordination compounds that possess a chelating salen-type ligand, a class of bis-Schiff bases obtained by condensation of salicylaldehyde and a diamine. They may act as catalytic antioxidants mimicking both the structure and the reactivity of the native antioxidant enzymes active site. Thus, manganosalen complexes have been shown to exhibit superoxide dismutase, catalase, and glutathione peroxidase activities, and they could potentially facilitate the scavenging of excess reactive oxygen species (ROS), thereby restoring the redox balance in damaged cells and organs. Initial catalytic studies compared the potency of these compounds as antioxidants in terms of rate constants of the chemical reactivity against ROS, giving catalytic values approaching and even exceeding that of the native antioxidative enzymes. Although most of these catalytic studies lack of biological relevance, subsequent in vitro studies have confirmed the efficiency of many manganosalen complexes in oxidative stress models. These synthetic catalytic scavengers, cheaper than natural antioxidants, have accordingly attracted intensive attention for the therapy of ROS-mediated injuries. The aim of this review is to focus on in vivo studies performed on manganosalen complexes and their activity on the treatment of several pathological disorders associated with oxidative damage. These disorders, ranging from the prevention of fetal malformations to the extension of lifespan, include neurodegenerative, inflammatory, and cardiovascular diseases; tissue injury; and other damages related to the liver, kidney, or lungs.
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7
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Citric acid-crosslinked β-cyclodextrin supported zinc peroxide as a biocompatible H 2O 2 scavenger. J Biol Inorg Chem 2020; 25:411-417. [PMID: 32146511 DOI: 10.1007/s00775-020-01771-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 02/28/2020] [Indexed: 12/14/2022]
Abstract
The aim of the present study was to evaluate the H2O2 scavenging activity of the ZnO2/β-CD as a biocompatible composite. Zinc peroxide was prepared via sonochemical approach. To synthesize a green composite, β-cyclodextrin was modified by citric acid (CA) and reacted with ZnO2 under ultrasonic irradiation. The prepared samples were characterized using XRD, SEM, TGA and FTIR analytical techniques. XRD analysis exhibited a typical pattern of ZnO2 and demonstrated the presence of citric acid and β-cyclodextrin in composite. The results of the catalytic assay showed that the ZnO2/CA-βCD composite displayed stronger capability to decompose H2O2 in comparison to ZnO2 particles (about seven times). It was attributed to increased adsorption capacity and solubility of composite due to the presence of citric acid and β-cyclodextrin. MTT assay studies confirmed the non-cytotoxic nature of ZnO2 particles and ZnO2/CA-βCD composite.
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Rouco L, Liberato A, Fernández-Trujillo MJ, Máñez A, Basallote MG, Alvariño R, Alfonso A, Botana LM, Maneiro M. Salen‑manganese complexes for controlling ROS damage: Neuroprotective effects, antioxidant activity and kinetic studies. J Inorg Biochem 2019; 203:110918. [PMID: 31759263 DOI: 10.1016/j.jinorgbio.2019.110918] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 11/04/2019] [Accepted: 11/10/2019] [Indexed: 12/23/2022]
Abstract
A new manganese(III) complex [MnL1(DCA)(H2O)](H2O),1 [H2L1 is the chelating ligand N,N'-bis(2-hydroxy-3-methoxybenzylidene)-1,2-diaminopropane, and DCA is dicyanamide], has been prepared and characterized by different analytical and spectroscopic techniques. The tetragonally elongated octahedral geometry for the manganese coordination sphere was revealed by X-ray diffraction studies for 1. The antioxidant behavior of this complex and other manganese(III)-salen type complexes was tested through superoxide dismutase and catalase probes, and through the study of their neuroprotective effects in SH-SY5Y neuroblastoma cells. In this human neuronal model, these model complexes were found to improve cell survival in an oxidative stress model. During studies aimed to getting a better understanding of the kinetics of the processes involved in this antioxidant behavior, an important effect on the solvent in the kinetics of reaction of the complexes with H2O2 was revealed that suggests a change in the mechanism of reaction of the complexes. The kinetic data in methanol and buffered aqueous solutions correlate well with the results of the test of catalase activity, thus showing that the rate determining step in the catalytic cycle corresponds to the initial reaction of the complexes with H2O2.
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Affiliation(s)
- Lara Rouco
- Departamento de Química Inorgánica, Facultade de Ciencias, Campus Terra, Universidade de Santiago de Compostela, Lugo, Spain
| | - Andrea Liberato
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, Cádiz, Spain
| | - M Jesús Fernández-Trujillo
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, Cádiz, Spain
| | - Angeles Máñez
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, Cádiz, Spain
| | - Manuel G Basallote
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, Cádiz, Spain
| | - Rebeca Alvariño
- Departamento. de Farmacología, Facultade de Veterinaria, Campus Terra, Universidade de Santiago de Compostela, Lugo, Spain
| | - Amparo Alfonso
- Departamento. de Farmacología, Facultade de Veterinaria, Campus Terra, Universidade de Santiago de Compostela, Lugo, Spain
| | - Luis M Botana
- Departamento. de Farmacología, Facultade de Veterinaria, Campus Terra, Universidade de Santiago de Compostela, Lugo, Spain
| | - Marcelino Maneiro
- Departamento de Química Inorgánica, Facultade de Ciencias, Campus Terra, Universidade de Santiago de Compostela, Lugo, Spain.
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10
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Palopoli C, Ferreyra J, Conte-Daban A, Richezzi M, Foi A, Doctorovich F, Anxolabéhère-Mallart E, Hureau C, Signorella SR. Insights into Second-Sphere Effects on Redox Potentials, Spectroscopic Properties, and Superoxide Dismutase Activity of Manganese Complexes with Schiff-Base Ligands. ACS OMEGA 2019; 4:48-57. [PMID: 31459311 PMCID: PMC6649300 DOI: 10.1021/acsomega.8b03018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 12/20/2018] [Indexed: 05/04/2023]
Abstract
Six Mn-Schiff base complexes, [Mn(X-salpn)]0/+ (salpn = 1,3-bis(sal-ic-ylidenamino)propane, X = H [1], 5-Cl [2], 2,5-F2 [3], 3,5-Cl2 [4], 5-NO2 [5], 3,5-(NO2)2 [6]), were synthesized and characterized in solution, and second-sphere effects on their electrochemical and spectroscopic properties were analyzed. The six complexes catalyze the dismutation of superoxide with catalytic rate constants in the range 0.65 to 1.54 × 106 M-1 s-1 obtained through the nitro blue tetrazolium photoreduction inhibition superoxide dismutases assay, in aqueous medium of pH 7.8. In solution, these compounds possess two labile solvent molecules in the axial positions favoring coordination of the highly nucleophilic O2 •- to the metal center. Even complex 5, [Mn(5-(NO2)salpn) (OAc) (H2O)], with an axial acetate in the solid state, behaves as a 1:1 electrolyte in methanolic solution. Electron paramagnetic resonance and UV-vis monitoring of the reaction of [Mn(X-salpn)]0/+ with KO2 demonstrates that in diluted solutions these complexes behave as catalysts supporting several additions of excess O2 •-, but at high complex concentrations (≥0.75 mM) catalyst self-inhibition occurs by the formation of a catalytically inactive dimer. The correlation of spectroscopic, electrochemical, and kinetics data suggest that second-sphere effects control the oxidation states of Mn involved in the O2 •- dismutation cycle catalyzed by complexes 1-6 and modulate the strength of the Mn-substrate adduct for electron-transfer through an inner-sphere mechanism.
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Affiliation(s)
- Claudia Palopoli
- IQUIR
(Instituto de Química Rosario), Consejo Nacional de Investigaciones
Científicas y Técnicas (CONICET), Facultad de Ciencias
Bioquímicas y Farmacéuticas, Universidad Nacional de
Rosario, Suipacha 531, S2002LRK Rosario, Argentina
| | - Joaquín Ferreyra
- IQUIR
(Instituto de Química Rosario), Consejo Nacional de Investigaciones
Científicas y Técnicas (CONICET), Facultad de Ciencias
Bioquímicas y Farmacéuticas, Universidad Nacional de
Rosario, Suipacha 531, S2002LRK Rosario, Argentina
| | | | - Micaela Richezzi
- IQUIR
(Instituto de Química Rosario), Consejo Nacional de Investigaciones
Científicas y Técnicas (CONICET), Facultad de Ciencias
Bioquímicas y Farmacéuticas, Universidad Nacional de
Rosario, Suipacha 531, S2002LRK Rosario, Argentina
| | - Ana Foi
- Departamento
de Química Inorgánica, Analítica y Química
Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA Buenos Aires, Argentina
| | - Fabio Doctorovich
- Departamento
de Química Inorgánica, Analítica y Química
Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA Buenos Aires, Argentina
| | - Elodie Anxolabéhère-Mallart
- Laboratoire
d’Electrochimie Moléculaire UMR CNRS-P7 7591, Université
Paris Diderot-Paris, 15 rue Jean-Antoine de Baïf, 75205 Paris Cedex 13, France
| | - Christelle Hureau
- LCC-CNRS,
Université de Toulouse, 205 route de Narbonne, 31077 Toulouse, France
| | - Sandra R. Signorella
- IQUIR
(Instituto de Química Rosario), Consejo Nacional de Investigaciones
Científicas y Técnicas (CONICET), Facultad de Ciencias
Bioquímicas y Farmacéuticas, Universidad Nacional de
Rosario, Suipacha 531, S2002LRK Rosario, Argentina
- E-mail: (S.R.S.)
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11
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Hakimi M, Tarani B, Mardani Z, Moeini K, Kučeráková M, Dušek M. Spectral, Structural, Theoretical and Docking Studies of a Mn(II) Complex with an N4-Donor Ligand. JOURNAL OF CHEMICAL RESEARCH 2018. [DOI: 10.3184/174751918x15422215897056] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The complex [Mn(EMMP)(OAc)2]·3H2O, [EMMP = N,N′-(ethane-1,2-diyl)bis(1-phenyl-1-{pyridin-2-yl}methanimine] has been prepared and has a distorted square-faced bicapped trigonal prismatic geometry. In the crystal network of the complex, the water molecules form stronger hydrogen bonds than the complex molecules and participate in the formation of R44(8) hydrogen bond motifs. The ability of the complex and its ligand to interact with the biomacromolecules (BRAF kinase, CatB, DNA gyrase, HDAC7, rHA, RNR, TrxR, TS and Top II) has been investigated by docking calculations and compared with that of doxorubicin.
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Affiliation(s)
- Mohammad Hakimi
- Chemistry Department, Payame Noor University, 19395-4697 Tehran, I.R. Iran
| | - Behjat Tarani
- Chemistry Department, Payame Noor University, 19395-4697 Tehran, I.R. Iran
| | - Zahra Mardani
- Inorganic Chemistry Department, Faculty of Chemistry, Urmia University, 57561-51818 Urmia, I.R. Iran
| | - Keyvan Moeini
- Chemistry Department, Payame Noor University, 19395-4697 Tehran, I.R. Iran
| | | | - Michal Dušek
- Institute of Physics of the Czech Academy of Sciences, Na Slovance 2, 182 21 Prague, Czech Republic
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Liberato A, Fernández-Trujillo MJ, Máñez Á, Maneiro M, Rodríguez-Silva L, Basallote MG. Pitfalls in the ABTS Peroxidase Activity Test: Interference of Photochemical Processes. Inorg Chem 2018; 57:14471-14475. [DOI: 10.1021/acs.inorgchem.8b02525] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Andrea Liberato
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, Avda. República Saharahui s/n, Puerto Real, 11510 Cádiz, Spain
| | - M. Jesús Fernández-Trujillo
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, Avda. República Saharahui s/n, Puerto Real, 11510 Cádiz, Spain
| | - Ángeles Máñez
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, Avda. República Saharahui s/n, Puerto Real, 11510 Cádiz, Spain
| | - Marcelino Maneiro
- Departamento de Química Inorgánica, Facultade de Ciencias, Campus de Lugo, Universidade de Santiago de Compostela, Avda. Alfonso X s/n, Lugo 27002, Spain
| | - Laura Rodríguez-Silva
- Departamento de Química Inorgánica, Facultade de Ciencias, Campus de Lugo, Universidade de Santiago de Compostela, Avda. Alfonso X s/n, Lugo 27002, Spain
| | - Manuel G. Basallote
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, Avda. República Saharahui s/n, Puerto Real, 11510 Cádiz, Spain
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13
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Rationally designed mimics of antioxidant manganoenzymes: Role of structural features in the quest for catalysts with catalase and superoxide dismutase activity. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.03.005] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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14
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Yin HY, Tang J, Zhang JL. Introducing Metallosalens into Biological Studies: The Renaissance of Traditional Coordination Complexes. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700695] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hao-Yan Yin
- Beijing National Laboratory for Molecular Sciences; State Key Laboratory of Rare Earth Materials Chemistry and Applications; College of Chemistry and Molecular Engineering; Peking University; 100871 Beijing P. R. China
| | - Juan Tang
- Beijing National Laboratory for Molecular Sciences; State Key Laboratory of Rare Earth Materials Chemistry and Applications; College of Chemistry and Molecular Engineering; Peking University; 100871 Beijing P. R. China
| | - Jun-Long Zhang
- Beijing National Laboratory for Molecular Sciences; State Key Laboratory of Rare Earth Materials Chemistry and Applications; College of Chemistry and Molecular Engineering; Peking University; 100871 Beijing P. R. China
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15
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Syntheses, characterization and antioxidant activity studies of mixed-ligand copper(II) complexes of 2,2′-bipyridine and glycine: The X-ray crystal structure of [Cu(BPy)(Gly)]ClO4. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.12.087] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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16
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Synthesis, Characterization, and Catalytic Studies of Mn(III)-Schiff Base-Dicyanamide Complexes: Checking the Rhombicity Effect in Peroxidase Studies. J CHEM-NY 2017. [DOI: 10.1155/2017/5465890] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The condensation of 3-methoxy-2-hydroxybenzaldehyde and the diamines 1,2-diphenylendiamine, 1,2-diamine-2-methylpropane and 1,3-propanediamine yielded the dianionic tetradentate Schiff base ligands N,N′-bis(2-hydroxy-4-methoxybenzylidene)-1,2-diphenylendiimine (H2L1), N,N′-bis(2-hydroxy-4-methoxybenzylidene)-1,2-diamino-2-methylpropane (H2L2) and N,N′-bis(2-hydroxy-4-methoxybenzylidene)-1,3-diaminopropane (H2L3) respectively. The organic compounds H2L1 and H2L2 have been characterized by elemental analysis, IR, 1H and 13C NMR spectroscopies and mass spectrometry electrospray (ES). The crystal structure of H2L2 in solid state, solved by X-ray crystallography, is highly conditioned in the solid state by two N-H•••N intramolecular interactions. The synthesis of three new manganese(III) complexes 1–3, incorporating these ligands, H2L1–H2L3, and dicyanamide (DCA), is reported. The complexes 1–3 have been physicochemically characterized by elemental analysis, IR and paramagnetic 1H NMR spectroscopy, ESI mass spectrometry, magnetic moment at room temperature and conductivity measurements. Complex 1 has been crystallographically characterized. The X-ray structure shows the self-assembly of the Mn(III)-Schiff base-DCA complex through µ-aquo bridges between neighbouring axial water molecules and also by π-π stacking interactions, establishing a dimeric structure. The manganese complexes were also tested as peroxidase mimics for the H2O2-mediated reaction with the water-soluble trap ABTS, showing complexes 1-2 relevant peroxidase activity in contrast with 3. The rhombicity around the metal ion can explain this catalytic behaviour.
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Raber J, Davis MJ, Pfankuch T, Rosenthal R, Doctrow SR, Moulder JE. Mitigating effect of EUK-207 on radiation-induced cognitive impairments. Behav Brain Res 2016; 320:457-463. [PMID: 27789343 DOI: 10.1016/j.bbr.2016.10.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 10/21/2016] [Accepted: 10/23/2016] [Indexed: 10/20/2022]
Abstract
The brain could be exposed to irradiation as part of a nuclear accident, radiological terrorism (dirty bomb scenario) or a medical radiological procedure. In the context of accidents or terrorism, there is considerable interest in compounds that can mitigate radiation-induced injury when treatment is initiated a day or more after the radiation exposure. As it will be challenging to determine the radiation exposure an individual has received within a relatively short time frame, it is also critical that the mitigating agent does not negatively affect individuals, including emergency workers, who might be treated, but who were not exposed. Alterations in hippocampus-dependent cognition often characterize radiation-induced cognitive injury. The catalytic ROS scavenger EUK-207 is a member of the class of metal-containing salen manganese (Mn) complexes that suppress oxidative stress, including in the mitochondria, and have been shown to mitigate radiation dermatitis, promote wound healing in irradiated skin, and mitigate vascular injuries in irradiated lungs. As the effects of EUK-207 against radiation injury in the brain are not known, we assessed the effects of EUK-207 on sham-irradiated animals and the ability of EUK-207 to mitigate radiation-induced cognitive injury. The day following irradiation or sham-irradiation, the mice started to receive EUK-207 and were cognitively tested 3 months following exposure. Mice irradiated at a dose of 15Gy showed cognitive impairments in the water maze probe trial. EUK-207 mitigated these impairments while not affecting cognitive performance of sham-irradiated mice in the water maze probe trial. Thus, EUK-207 has attractive properties and should be considered an ideal candidate to mitigate radiation-induced cognitive injury.
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Affiliation(s)
- J Raber
- Department of Behavioral Neuroscience, L470, Oregon Health and Science University, Portland, OR 97239, USA; Departments of Neurology and Radiation Medicine, Division of Neuroscience, ONPRC, L470, Oregon Health and Science University, Portland, Oregon 97239, USA.
| | - M J Davis
- Department of Behavioral Neuroscience, L470, Oregon Health and Science University, Portland, OR 97239, USA
| | - T Pfankuch
- Department of Behavioral Neuroscience, L470, Oregon Health and Science University, Portland, OR 97239, USA
| | - R Rosenthal
- Pulmonary Center, Boston University School of Medicine, MA 02215, USA
| | - S R Doctrow
- Pulmonary Center, Boston University School of Medicine, MA 02215, USA
| | - J E Moulder
- Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI, USA
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Mundlapati VR, Jena P, Acharya AN, Kar AK, Dash AC, Biswal HS. Water exchange reaction of a manganese catalase mimic: oxygen-17 NMR relaxometry study on (aqua)manganese(iii) in a salen scaffold and its reactions in a mildly basic medium. RSC Adv 2016. [DOI: 10.1039/c6ra23154c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Water exchange of trans-[MnIII(salen)(OH2)2]+ studied by line broadening 17OH2 NMR discloses its mechanism as associative interchange (Ia).
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Affiliation(s)
- V. Rao Mundlapati
- School of Chemical Sciences
- National Institute of Science Education and Research (NISER)
- Institute of Physics Campus
- Bhubaneswar 751 005
- India
| | - Priyambada Jena
- Department of Chemistry
- College of Engineering and Technology
- Bhubaneswar 751003
- India
| | - Achyut N. Acharya
- Department of Chemistry
- College of Engineering and Technology
- Bhubaneswar 751003
- India
| | - Akshaya K. Kar
- Department of Chemistry
- Utkal University
- Bhubaneswar 751004
- India
| | - Anadi C. Dash
- Department of Chemistry
- Utkal University
- Bhubaneswar 751004
- India
| | - Himansu S. Biswal
- School of Chemical Sciences
- National Institute of Science Education and Research (NISER)
- Institute of Physics Campus
- Bhubaneswar 751 005
- India
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19
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Apostolova N, Victor VM. Molecular strategies for targeting antioxidants to mitochondria: therapeutic implications. Antioxid Redox Signal 2015; 22:686-729. [PMID: 25546574 PMCID: PMC4350006 DOI: 10.1089/ars.2014.5952] [Citation(s) in RCA: 172] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Mitochondrial function and specifically its implication in cellular redox/oxidative balance is fundamental in controlling the life and death of cells, and has been implicated in a wide range of human pathologies. In this context, mitochondrial therapeutics, particularly those involving mitochondria-targeted antioxidants, have attracted increasing interest as potentially effective therapies for several human diseases. For the past 10 years, great progress has been made in the development and functional testing of molecules that specifically target mitochondria, and there has been special focus on compounds with antioxidant properties. In this review, we will discuss several such strategies, including molecules conjugated with lipophilic cations (e.g., triphenylphosphonium) or rhodamine, conjugates of plant alkaloids, amino-acid- and peptide-based compounds, and liposomes. This area has several major challenges that need to be confronted. Apart from antioxidants and other redox active molecules, current research aims at developing compounds that are capable of modulating other mitochondria-controlled processes, such as apoptosis and autophagy. Multiple chemically different molecular strategies have been developed as delivery tools that offer broad opportunities for mitochondrial manipulation. Additional studies, and particularly in vivo approaches under physiologically relevant conditions, are necessary to confirm the clinical usefulness of these molecules.
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Affiliation(s)
- Nadezda Apostolova
- 1 Faculty of Health Sciences, University Jaume I , Castellón de la Plana, Spain
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20
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González-Riopedre G, Bermejo MR, Fernández-García MI, González-Noya AM, Pedrido R, Rodríguez-Doutón MJ, Maneiro M. Alkali-Metal-Ion-Directed Self-Assembly of Redox-Active Manganese(III) Supramolecular Boxes. Inorg Chem 2015; 54:2512-21. [DOI: 10.1021/ic501842x] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Gustavo González-Riopedre
- Departamento de
Química Inorgánica, Facultade de Ciencias, Universidade de Santiago de Compostela, 27002 Lugo, Spain
| | - Manuel R. Bermejo
- Centro de Investigación en Química
Biolóxica e Materiais Moleculares, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - M. Isabel Fernández-García
- Departamento de
Química Inorgánica, Facultade de Ciencias, Universidade de Santiago de Compostela, 27002 Lugo, Spain
| | - Ana M. González-Noya
- Departamento de
Química Inorgánica, Facultade de Ciencias, Universidade de Santiago de Compostela, 27002 Lugo, Spain
- Centro de Investigación en Química
Biolóxica e Materiais Moleculares, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Rosa Pedrido
- Departamento de
Química Inorgánica, Facultade de Ciencias, Universidade de Santiago de Compostela, 27002 Lugo, Spain
- Centro de Investigación en Química
Biolóxica e Materiais Moleculares, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - M. Jesús Rodríguez-Doutón
- Departamento de
Química Inorgánica, Facultade de Ciencias, Universidade de Santiago de Compostela, 27002 Lugo, Spain
| | - Marcelino Maneiro
- Departamento de
Química Inorgánica, Facultade de Ciencias, Universidade de Santiago de Compostela, 27002 Lugo, Spain
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21
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Mimicking Peroxidase Activity by a Manganese(II) Complex Involving a New Asymmetric Tetradentate Ligand Containing Both Amino and Imino Groups. J CHEM-NY 2015. [DOI: 10.1155/2015/963152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The asymmetric ligand (E)-4-bromo-2-(((2-((5-bromo-2-hydroxybenzyl)(methyl)amino)ethyl)imino)methyl)phenol has been prepared by a novel seven-step route. All organic compounds isolated in each step have been characterised by elemental analysis, infrared and1H NMR spectroscopy, and mass spectrometry. Interaction of this ligand with manganese has been investigated employing an electrochemical method. This method leads to the formation of a neutral manganese(II) complex7in high yield and purity. The complex has been thoroughly characterised by elemental analysis, infrared spectroscopy, mass spectrometry, magnetic susceptibility measurements, and cyclic voltammetry. Complex7behaves as peroxidase mimic in the presence of the water-soluble trap ABTS, probably due to its ease to coordinate the substrate molecule.
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22
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In vivo anti-androgenic, anti-estrogenic and antioxidant activities of the aqueous extract of Eremomastax speciosa. ASIAN PACIFIC JOURNAL OF TROPICAL DISEASE 2014. [DOI: 10.1016/s2222-1808(14)60765-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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23
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Kash JC, Xiao Y, Davis AS, Walters KA, Chertow DS, Easterbrook JD, Dunfee RL, Sandouk A, Jagger BW, Schwartzman LM, Kuestner RE, Wehr NB, Huffman K, Rosenthal RA, Ozinsky A, Levine RL, Doctrow SR, Taubenberger JK. Treatment with the reactive oxygen species scavenger EUK-207 reduces lung damage and increases survival during 1918 influenza virus infection in mice. Free Radic Biol Med 2014; 67:235-47. [PMID: 24140866 PMCID: PMC3927540 DOI: 10.1016/j.freeradbiomed.2013.10.014] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 10/07/2013] [Accepted: 10/08/2013] [Indexed: 12/16/2022]
Abstract
The 1918 influenza pandemic caused over 40 million deaths worldwide, with 675,000 deaths in the United States alone. Studies in several experimental animal models showed that 1918 influenza virus infection resulted in severe lung pathology associated with dysregulated immune and cell death responses. To determine if reactive oxygen species produced by host inflammatory responses play a central role in promoting severity of lung pathology, we treated 1918 influenza virus-infected mice with the catalytic catalase/superoxide dismutase mimetic, salen-manganese complex EUK-207 beginning 3 days postinfection. Postexposure treatment of mice infected with a lethal dose of the 1918 influenza virus with EUK-207 resulted in significantly increased survival and reduced lung pathology without a reduction in viral titers. In vitro studies also showed that EUK-207 treatment did not affect 1918 influenza viral replication. Immunohistochemical analysis showed a reduction in the detection of the apoptosis marker cleaved caspase-3 and the oxidative stress marker 8-oxo-2'-deoxyguanosine in lungs of EUK-207-treated animals compared to vehicle controls. High-throughput sequencing and RNA expression microarray analysis revealed that treatment resulted in decreased expression of inflammatory response genes and increased lung metabolic and repair responses. These results directly demonstrate that 1918 influenza virus infection leads to an immunopathogenic immune response with excessive inflammatory and cell death responses that can be limited by treatment with the catalytic antioxidant EUK-207.
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Affiliation(s)
- John C Kash
- Laboratory of Infectious Diseases, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
| | - Yongli Xiao
- Laboratory of Infectious Diseases, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - A Sally Davis
- Laboratory of Infectious Diseases, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | | | - Daniel S Chertow
- Laboratory of Infectious Diseases, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA; Critical Care Medicine Department, Clinical Center, National Institutes of Health, Bethesda, MD 20892, USA
| | - Judith D Easterbrook
- Laboratory of Infectious Diseases, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Rebecca L Dunfee
- Laboratory of Infectious Diseases, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Aline Sandouk
- Laboratory of Infectious Diseases, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Brett W Jagger
- Laboratory of Infectious Diseases, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Louis M Schwartzman
- Laboratory of Infectious Diseases, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | | | - Nancy B Wehr
- Laboratory of Biochemistry, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Karl Huffman
- Pulmonary Center, Department of Medicine, Boston University Medical School, Boston, MA 02118, USA
| | - Rosalind A Rosenthal
- Pulmonary Center, Department of Medicine, Boston University Medical School, Boston, MA 02118, USA
| | | | - Rodney L Levine
- Laboratory of Biochemistry, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Susan R Doctrow
- Pulmonary Center, Department of Medicine, Boston University Medical School, Boston, MA 02118, USA
| | - Jeffery K Taubenberger
- Laboratory of Infectious Diseases, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
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24
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Carmona U, Zhang L, Li L, Münchgesang W, Pippel E, Knez M. Tuning, inhibiting and restoring the enzyme mimetic activities of Pt–apoferritin. Chem Commun (Camb) 2014; 50:701-3. [DOI: 10.1039/c3cc48000c] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Selective inhibition of the enzyme mimetic activity of nanoparticles and a novel way to recover the inhibited activity.
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Affiliation(s)
| | | | - Le Li
- CIC nanoGUNE
- 20018 Donostia-San Sebastian, Spain
| | | | - Eckhard Pippel
- Max Planck Institute of Microstructure Physics
- 06120 Halle, Germany
| | - Mato Knez
- CIC nanoGUNE
- 20018 Donostia-San Sebastian, Spain
- IKERBASQUE
- Basque Foundation for Science
- 48011 Bilbao, Spain
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